首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   807篇
  免费   29篇
管理学   183篇
民族学   3篇
人口学   49篇
丛书文集   2篇
理论方法论   71篇
综合类   13篇
社会学   342篇
统计学   173篇
  2024年   1篇
  2023年   4篇
  2022年   4篇
  2021年   10篇
  2020年   25篇
  2019年   36篇
  2018年   54篇
  2017年   41篇
  2016年   43篇
  2015年   24篇
  2014年   37篇
  2013年   109篇
  2012年   52篇
  2011年   40篇
  2010年   29篇
  2009年   29篇
  2008年   46篇
  2007年   30篇
  2006年   24篇
  2005年   29篇
  2004年   29篇
  2003年   21篇
  2002年   22篇
  2001年   15篇
  2000年   12篇
  1999年   12篇
  1998年   3篇
  1997年   7篇
  1996年   5篇
  1995年   5篇
  1994年   2篇
  1993年   5篇
  1992年   1篇
  1991年   1篇
  1990年   3篇
  1988年   3篇
  1987年   2篇
  1986年   2篇
  1985年   3篇
  1984年   5篇
  1983年   3篇
  1980年   1篇
  1979年   1篇
  1974年   3篇
  1972年   2篇
  1969年   1篇
排序方式: 共有836条查询结果,搜索用时 15 毫秒
221.
222.
Educational attainment depends on parents' material and cultural resources. In many families, the grandparents also provide resources that directly or indirectly support their children's educational careers. That is why we applied a multigenerational view and tested if and under which conditions the resources of grandparents are relevant for the educational outcomes of their grandchildren. Using data from the fifth wave of the Survey of Health, Ageing and Retirement in Europe (N = 27,447), we examined the association between the education of children and the resources of their grandparents. The results show that the impact of grandparental resources is not generally negligible and not entirely mediated by the parental generation. The resources of the grandparents can be used as a substitute for a lack of parental resources. In addition, the “grandparent effect” also differs across countries, indicating that certain welfare state provisions seem to enhance or attenuate the relevance of grandparents' resources.  相似文献   
223.
The complexity of the individual income tax system can give rise to both under‐ and overreporting of liability, thus creating a wedge between taxpayer perceptions of the price of public services and their actual cost, and potentially leading to budget misallocations and associated efficiency losses. This study uses theory and experiments to evaluate the effectiveness of taxpayer service programs that endeavor to resolve uncertainty over tax liability. To do so, we induce uncertainty over tax liability and investigate the effects of both service accuracy and reliability. We find participants are less likely to file when tax liability is uncertain but the provision of information offsets this effect; furthermore, it appears that simply providing a service, even one that imperfectly reveals liability, increases the propensity to file and the accuracy of the filing. When a service that promises to resolve uncertainty completely is requested but not delivered, the result is underreporting even more severe than in a setting where no service is available. (JEL H2, H26, C91)  相似文献   
224.
Qualitative data from interviews with gay men in Berlin, Germany were used to identify challenges facing HIV prevention and treatment as well as opportunities to improve them. In 2015, 20 self-identified gay men in Berlin—who had all received HIV prevention services and/or treatment (broadly defined)—participated in 1-on-1 qualitative interviews (30–75 min long). Ages ranged from 24 to 54, 35% self-identified as HIV-positive, and the remainder as HIV-negative. With regard to challenges to HIV prevention, participants highlighted (a) an already high HIV burden among gay men in Berlin and thus a need for doing prevention with positives (test-and-treat, and treatment as prevention); (b) the lack of a universal free condom distribution program; and (c) relaxed attitudes around the seriousness of HIV as a result of HIV treatment optimism. Participants highlighted that although condoms are an effective HIV prevention strategy (and thus certainly an area for focus), HIV prevention campaigns would benefit from updates with regard to embracing a diverse range of biological and behavioral prevention strategies, as well as expanded methods for making access to postexposure prophylaxis and free rapid HIV-antibody testing. This study informs HIV prevention approaches in Berlin, Germany as well as other urban centers where MSM are disproportionally affected by the HIV epidemic.  相似文献   
225.
We consider the problem of testing whether realizations of a spatial Poisson process come from a circular intensity model or from an elliptical intensity model. We describe the behavior of the Generalized Likelihood Ratio and Wald tests, in the asymptotics of large samples. The power functions are studied under local alternatives and results of numerical simulations comparing them to the Neyman–Pearson envelope are presented.  相似文献   
226.
The discussion about business models has gained considerable attention in the last decade. Business model frameworks have been developed in the literature as management methods helping companies to comprehend and analyse their current business logic and guide the deployment of new strategies. In response to calls for a deeper understanding of the application of a business model approach to product-service systems (PSS), this study develops a two-level hierarchical framework that (i) includes a set of components with pertinent, second-order variables to take into account when undergoing the shift from products to solutions; (ii) supports industrial companies, especially SMEs, in designing their future business model and in consistently planning the actions needed to implement it. The framework was applied and refined within real-life settings. The application to KINE – a robot solutions supplier – shows how key challenges faced by servitization firms may be thoroughly addressed through the adoption of a business model perspective.  相似文献   
227.

In this introductory essay to the special issue on civil society in authoritarian and hybrid regimes, we review core themes in the growing literature on shrinking or closing space for civil society. We discuss the role of civil society organizations (CSOs) as agents of democratization and note the emergence of dual, at times apparently conflicting policy postures within authoritarian regimes (restriction and repression for some CSOs vs. financial support and opportunities for collaboration for others). We posit that different conceptual perspectives applied to civil society can help account for the duality of authoritarian postures and examine repercussions for three key subgroups of CSOs: claims-making (or advocacy) NGOs, nonprofit service providers and regime-loyal NGOs supporting often populist and nationalist discourses.

  相似文献   
228.
The expansion of global supply chains (GSCs) has increasingly disconnected the location of jobs from the demand supporting them, both geographically and in terms of sector. Using data from the World Input–Output Database, the authors examine these linkages across 40 countries over the period 1995–2013, expanding on earlier analysis published by the ILO, and provide evidence of the number of GSC‐related jobs in terms of job location–export destination combinations. Their findings point to changing patterns in demand and supply of GSC‐related jobs, increasing the role of China as a demand generator, reinforcing production linkages between emerging economies and increasing the number of service jobs dependent on manufacturing GSCs.  相似文献   
229.
Using South African household expenditure data, we analyze how the spending of a household on visible goods, such as jewelry and clothes, depends on the distribution of income within its social group. We find that this spending is positively correlated with the share of peers who possess a similar income level to the household, what we dub the “local income share.” Moreover, we find that the spending of a household on visible goods is positively correlated with the average income of peers that are poorer than this household. We interpret this as evidence for cascade effects through which income changes among the poorest in the social group can trigger adjustments in the visible spending patterns of the wealthy. In line with previous research (Charles et al. 2009), we also find that visible spending of a household is negatively correlated with the average income of its social group. We present a simple model of status competition based on Hopkins and Kornienko (2004) that synthesizes these effects and can account for our results. (JEL D12, D31, O12)  相似文献   
230.
Regulatory problems in infancy and toddlerhood have previously been associated with an increased risk of developing attention problems in childhood. We hypothesized that early regulatory problems are associated with attention problems via reduced inhibitory control. This prospective study assessed 1,459 children from birth to 8 years. Crying, feeding, and sleeping problems were assessed at 5 and 20 months via parent interviews and neurological examinations. At 20 months, inhibitory control was tested with a behavioral (snack delay) task. Attention regulation was assessed at 6 and 8 years using multiple instruments and informants. Detrimental effects of crying, feeding, and sleeping problems on attention regulation were partly mediated by children's ability to inhibit unwanted behaviors (β = ?0.04, = 0.013). Accounting for cognition diminished this indirect effect (β = ?0.01, = 0.209). Instead, the effects of crying, feeding, and sleeping problems on attention regulation were fully mediated by children's cognitive functioning (β = ?0.10, < 0.001). These results support that inhibitory control abilities partly mediate effects of crying, feeding, and sleeping problems. However, these effects may be accounted for by children's general cognitive abilities. Early regulatory problems may set infants on a course of under control of behavior into school age, and such trajectories are highly associated with general cognitive development.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号